Lu Chuan spent a lot of time on these two key parts of the outdoor survey, but he also obtained more clues accordingly.
"Was the door locked at that time?"
Before entering the room, Lu Chuan carefully observed the condition of the door. There were no signs of violent damage on it.
Zhao Zhigao shook his head. The door was a key part of their investigation at that time.
“The door is actually not locked. We contacted this family that day. They evacuated from the village a month ago. All the valuable things in this house have been moved away, and the remaining The things are waiting for demolition.”
Zhao Zhigao pointed to other surrounding houses that had hardly been demolished.
“The surrounding houses are basically like this. It costs money to lock them, so they don’t lock them and are waiting to be demolished.”
Because the decoration of this house is not particularly good.
There are some houses in the village that have just been built in recent years. The owners will remove the plastic steel windows and better doors and sell them.
Ordinary houses like this are not worth demolishing, so they are all left here.
"The door handle has been wiped and no fingerprints were collected."
This is easier to understand. If the murderer has not touched the door handle or handled it, then there should be fingerprints on it, although not necessarily It belongs to the murderer.
But there are no fingerprints on it, so it must have been wiped.
Open the door and enter the room where you will find the stove.
Although five or six days had passed since the incident, Lu Chuan still seemed to be able to smell the faint scent of meat.
There was still blood in the big iron pot that had not been cleaned at all.
"Has the amount of blood in the pot been tested at that time?"
Zhao Zhigao nodded: "The other party should have added water to the blood, otherwise it would have been boiled dry. We will try again. When it arrives, the blood looks a bit like blood tofu.”
“But based on the iron content in it, we did some experiments and were able to basically determine that it was the blood volume of an adult. This is confirmed, it is indeed human blood."
"It's just...because the blood has been cooked, many biological characteristics have long since disappeared, and there is no way to determine the bleeding type. In fact, from our perspective. From the perspective of current investigation, it cannot be determined that the blood in the pot belongs to the deceased Wang Jingya.”
Zhao Zhigao said this to tell Lu Chuan that from the perspective of on-site investigation, there was no concrete evidence to support that the blood in the iron pot was Wang Jingya's blood.
Of course, in terms of logical reasoning, it is another situation.
It’s not that only one victim was found at the crime scene. Although the body and blood were separated, from a logical reasoning point of view, the blood should be Wang Jingya’s.
"Director Zhao, give me the ultraviolet lamp to use."
When Lu Chuan came here, it was naturally impossible for him to bring all the first-look equipment, so he used Zhao Zhigao’s on-site survey equipment.
Lu Chuan first roughly illuminated the entire area around the stove with an ultraviolet lamp and found no trace of blood.
"Sure enough, there were no blood stains."
If the murderer had bled Wang Jingya on the stove, and then let the blood flow directly into the iron pot.
No matter how carefully the other party handles it, theoretically there will be some blood spraying out of the iron pot.
Even if the other party handles it carefully and wipes it, the blood cannot be completely eliminated by wiping it.
Even if it is no longer visible on the surface, because the blood stain contains a lot of iron, if the ions do not process these chemical substances, the blood stain can be detected no matter how long it takes.
Zhao Zhigao really admires Lu Chuan.
"Team Lu, we have scanned the entire room, and no blood stains were found anywhere."
If Lu Chuan hadn't said that this was not the scene of the first crime, maybe all No one can imagine this. But now it seems that from the perspective of on-site investigation, it is indeed possible that the murderer here is not the first crime scene. He should have killed people elsewhere and then came to this village with blood and corpses.
Only in this way can such a clean scene be created.
Hearing Zhao Zhigao's words, Lu Chuan nodded, but he still took a UV scanner and looked around the house carefully.
On-site inspections are something that everyone gets from the inspections and conclusions are actually different.
So even though Zhao Zhigao had said it, Lu Chuan still had to read it himself, otherwise there would be no point in his coming.
“Nothing at the scene has been touched, right?”
Zhao Zhigao nodded affirmatively: "Except for the deceased's belongings which were taken away, everything else remains the same and nothing has been touched."
After scanning around with an ultraviolet scanning light, Lu Chuan confirmed that Finding nothing, he returned the tools to Zhao Zhigao and started working on the edge of the stove.
There is a small bench inside the stove. The murderer must have been sitting on this small bench to fill the stove pit with firewood.
Not far away, there is a pile of firewood that has not yet burned out.
Lu Chuan walked to the small bench and sat on it, casually extending his left hand towards the pile of remaining firewood.
With his height and arm length, he could easily reach the firewood.
After Lu Chuan stood up, he picked up his notebook and wrote down a few numbers.
After that, Lu Chuan started working on the firewood pile indoors again.
Compared with the investigation inside the interview outside, Lu Chuan was more meticulous this time.
He took each of the remaining firewood, inspected it, and numbered it.
"Lijun... what are you?"
Of course Zhao Zhigao also paid attention to this pile of firewood, but he didn't do much in the details.
Lu Chuan did not look at Zhao Zhigao, who was still busy, but he casually explained to him.
"The murderer should have a strong anti-reconnaissance awareness. We just took a look indoors and found that the treatment was very clean and there were no footprints on the ground."
"And the edge of the fire bed The places where the deceased’s belongings were kept were also dealt with.”
"But the murderer fell somewhere."
Zhao Zhigao finally realized when he saw Lu Chuan working on the firewood: "You mean the firewood?"
Lu Chuan nodded.
"It's this pile of firewood."
The crime scene is actually a two-room room. After entering the door, there is a kitchen with a stove and a cupboard.
There should have been some water tanks and the like, but now they should have been moved away by the original owners.
So this house looks very empty inside.
Lu Chuan pointed to a corner in the room.
“The original owner should have piled firewood in that corner.”
Because firewood was piled for a long time, the color of the ground in that area was different from other places, and there were already some The crumbs stay there, that's well judged. (End of chapter)